Conditioning
A: Any Erg, 5-10′ nasal breathing only. If you’re using an HR monitor, aim for Z2/3 by the end of this.
B: 20-25 rounds, any erg
Sprint 15” / Recover 60”. If you’re using an HR monitor, hit Z4 in the sprints and see if you can recovery to Z2/Z3 within 60″. Match power output across the intervals, and if at 20 rounds you are still able to match power (and recover your HR), continue to 25 rounds